/*!
* MockJax - jQuery Plugin to Mock Ajax requests
*
* Version: 1.5.1
* Released:
* Home: http://github.com/appendto/jquery-mockjax
* Author: Jonathan Sharp (http://jdsharp.com)
* License: MIT,GPL
*
* Copyright (c) 2011 appendTo LLC.
* Dual licensed under the MIT or GPL licenses.
* http://appendto.com/open-source-licenses
*/
(function($) {
    var _ajax = $.ajax,
        mockHandlers = [],
        CALLBACK_REGEX = /=\?(&|$)/,
        jsc = (new Date()).getTime();

    // Parse the given XML string.

    function parseXML(xml) {
        if (window['DOMParser'] == undefined && window.ActiveXObject) {
            DOMParser = function() {
            };
            DOMParser.prototype.parseFromString = function(xmlString) {
                var doc = new ActiveXObject('Microsoft.XMLDOM');
                doc.async = 'false';
                doc.loadXML(xmlString);
                return doc;
            };
        }

        try {
            var xmlDoc = (new DOMParser()).parseFromString(xml, 'text/xml');
            if ($.isXMLDoc(xmlDoc)) {
                var err = $('parsererror', xmlDoc);
                if (err.length == 1) {
                    throw ('Error: ' + $(xmlDoc).text());
                }
            }
            else {
                throw ('Unable to parse XML');
            }
        }
        catch(e) {
            var msg = (e.name == undefined ? e : e.name + ': ' + e.message);
            $(document).trigger('xmlParseError', [msg]);
            return undefined;
        }
        return xmlDoc;
    }

    // Trigger a jQuery event

    function trigger(s, type, args) {
        (s.context ? $(s.context) : $.event).trigger(type, args);
    }

    // Check if the data field on the mock handler and the request match. This
    // can be used to restrict a mock handler to being used only when a certain
    // set of data is passed to it.

    function isMockDataEqual(mock, live) {
        var identical = false;
        // Test for situations where the data is a querystring (not an object)
        if (typeof live === 'string') {
            // Querystring may be a regex
            return $.isFunction(mock.test) ? mock.test(live) : mock == live;
        }

        if ($.isEmptyObject(mock) && $.isEmptyObject(live)) {
            return true;
        }

        $.each(mock, function(k, v) {
            if (live[k] === undefined) {
                identical = false;
                return identical;
            }
            else {
                identical = true;
                if (typeof live[k] == 'object') {
                    return isMockDataEqual(mock[k], live[k]);
                }
                else {
                    if ($.isFunction(mock[k].test)) {
                        identical = mock[k].test(live[k]);
                    }
                    else {
                        identical = (mock[k] == live[k]);
                    }
                    return identical;
                }
            }
        });

        return identical;
    }

    // Check the given handler should mock the given request

    function getMockForRequest(handler, requestSettings) {
        // If the mock was registered with a function, let the function decide if we
        // want to mock this request
        if ($.isFunction(handler)) {
            return handler(requestSettings);
        }

        // Inspect the URL of the request and check if the mock handler's url
        // matches the url for this ajax request
        if ($.isFunction(handler.url.test)) {
            // The user provided a regex for the url, test it
            if (!handler.url.test(requestSettings.url)) {
                return null;
            }
        }
        else {
            // Look for a simple wildcard '*' or a direct URL match
            var star = handler.url.indexOf('*');
            if (handler.url !== requestSettings.url && star === -1 ||
                !new RegExp(handler.url.replace(/[-[\]{}()+?.,\\^$|#\s]/g, "\\$&").replace('*', '.+')).test(requestSettings.url)) {
                return null;
            }
        }

        // Inspect the data submitted in the request (either POST body or GET query string)

        if (!ExecutableHelper.IsNullOrEmpty(handler.data) && !ExecutableHelper.IsNullOrEmpty(requestSettings.data)) {

            if (!isMockDataEqual(handler.data, requestSettings.data)) {
                // They're not identical, do not mock this request
                return null;
            }
        }

        // Inspect the request type
        if (handler && handler.type &&
            handler.type.toLowerCase() != requestSettings.type.toLowerCase()) {
            // The request type doesn't match (GET vs. POST)
            return null;
        }

        return handler;
    }

    // If logging is enabled, log the mock to the console

    function logMock(mockHandler, requestSettings) {
        var c = $.extend({}, $.mockjaxSettings, mockHandler);
        if (c.log && $.isFunction(c.log)) {
            c.log('MOCK ' + requestSettings.type.toUpperCase() + ': ' + requestSettings.url, $.extend({}, requestSettings));
        }
    }

    // Process the xhr objects send operation

    function _xhrSend(mockHandler, requestSettings, origSettings) {

        // This is a substitute for < 1.4 which lacks $.proxy
        var process = (function(that) {
            return function() {
                return (function() {
                    // The request has returned
                    this.status = mockHandler.status;
                    this.statusText = mockHandler.statusText;
                    this.readyState = 4;

                    // We have an executable function, call it to give
                    // the mock handler a chance to update it's data
                    if ($.isFunction(mockHandler.response)) {
                        mockHandler.response(origSettings);
                    }
                    // Copy over our mock to our xhr object before passing control back to
                    // jQuery's onreadystatechange callback
                    if ((requestSettings.dataType == 'JSON' || requestSettings.dataType == 'json') && (typeof mockHandler.responseText == 'object')) {
                        this.responseText = JSON.stringify(mockHandler.responseText);
                    }
                    else if (requestSettings.dataType == 'xml') {
                        if (typeof mockHandler.responseXML == 'string') {
                            this.responseXML = parseXML(mockHandler.responseXML);
                        }
                        else {
                            this.responseXML = mockHandler.responseXML;
                        }
                    }
                    else {
                        this.responseText = mockHandler.responseText;
                    }
                    if (typeof mockHandler.status == 'number' || typeof mockHandler.status == 'string') {
                        this.status = mockHandler.status;
                    }
                    if (typeof mockHandler.statusText === "string") {
                        this.statusText = mockHandler.statusText;
                    }
                    // jQuery < 1.4 doesn't have onreadystate change for xhr
                    if ($.isFunction(this.onreadystatechange)) {
                        if (mockHandler.isTimeout) {
                            this.status = -1;
                        }
                        this.onreadystatechange(mockHandler.isTimeout ? 'timeout' : undefined);
                    }
                    else if (mockHandler.isTimeout) {
                        // Fix for 1.3.2 timeout to keep success from firing.
                        this.status = -1;
                    }
                }).apply(that);
            };
        })(this);

        if (mockHandler.proxy) {
            // We're proxying this request and loading in an external file instead
            _ajax({
                global : false,
                url : mockHandler.proxy,
                type : mockHandler.proxyType,
                data : mockHandler.data,
                dataType : requestSettings.dataType === "script" ? "text/plain" : requestSettings.dataType,
                complete : function(xhr, txt) {
                    mockHandler.responseXML = xhr.responseXML;
                    mockHandler.responseText = xhr.responseText;
                    mockHandler.status = xhr.status;
                    mockHandler.statusText = xhr.statusText;
                    this.responseTimer = setTimeout(process, mockHandler.responseTime || 0);
                }
            });
        }
        else {
            // type == 'POST' || 'GET' || 'DELETE'
            if (requestSettings.async === false) {
                // TODO: Blocking delay
                process();
            }
            else {
                this.responseTimer = setTimeout(process, mockHandler.responseTime || 50);
            }
        }
    }

    // Construct a mocked XHR Object

    function xhr(mockHandler, requestSettings, origSettings, origHandler) {
        // Extend with our default mockjax settings
        mockHandler = $.extend({}, $.mockjaxSettings, mockHandler);

        if (typeof mockHandler.headers === 'undefined') {
            mockHandler.headers = {};
        }
        if (mockHandler.contentType) {
            mockHandler.headers['content-type'] = mockHandler.contentType;
        }

        return {
            status : mockHandler.status,
            statusText : mockHandler.statusText,
            readyState : 1,
            open : function() {
            },
            send : function() {
                origHandler.fired = true;
                _xhrSend.call(this, mockHandler, requestSettings, origSettings);
            },
            abort : function() {
                clearTimeout(this.responseTimer);
            },
            setRequestHeader : function(header, value) {
                mockHandler.headers[header] = value;
            },
            getResponseHeader : function(header) {
                // 'Last-modified', 'Etag', 'content-type' are all checked by jQuery
                if (mockHandler.headers && mockHandler.headers[header]) {
                    // Return arbitrary headers
                    return mockHandler.headers[header];
                }
                else if (header.toLowerCase() == 'last-modified') {
                    return mockHandler.lastModified || (new Date()).toString();
                }
                else if (header.toLowerCase() == 'etag') {
                    return mockHandler.etag || '';
                }
                else if (header.toLowerCase() == 'content-type') {
                    return mockHandler.contentType || 'text/plain';
                }
            },
            getAllResponseHeaders : function() {
                var headers = '';
                $.each(mockHandler.headers, function(k, v) {
                    headers += k + ': ' + v + "\n";
                });
                return headers;
            }
        };
    }

    // Process a JSONP mock request.

    function processJsonpMock(requestSettings, mockHandler, origSettings) {
        // Handle JSONP Parameter Callbacks, we need to replicate some of the jQuery core here
        // because there isn't an easy hook for the cross domain script tag of jsonp

        processJsonpUrl(requestSettings);

        requestSettings.dataType = "json";
        if (requestSettings.data && CALLBACK_REGEX.test(requestSettings.data) || CALLBACK_REGEX.test(requestSettings.url)) {
            createJsonpCallback(requestSettings, mockHandler);

            // We need to make sure
            // that a JSONP style response is executed properly

            var rurl = /^(\w+:)?\/\/([^\/?#]+)/,
                parts = rurl.exec(requestSettings.url),
                remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host);

            requestSettings.dataType = "script";
            if (requestSettings.type.toUpperCase() === "GET" && remote) {
                var newMockReturn = processJsonpRequest(requestSettings, mockHandler, origSettings);

                // Check if we are supposed to return a Deferred back to the mock call, or just
                // signal success
                if (newMockReturn) {
                    return newMockReturn;
                }
                else {
                    return true;
                }
            }
        }
        return null;
    }

    // Append the required callback parameter to the end of the request URL, for a JSONP request

    function processJsonpUrl(requestSettings) {
        if (requestSettings.type.toUpperCase() === "GET") {
            if (!CALLBACK_REGEX.test(requestSettings.url)) {
                requestSettings.url += (/\?/.test(requestSettings.url) ? "&" : "?") +
                    (requestSettings.jsonp || "callback") + "=?";
            }
        }
        else if (!requestSettings.data || !CALLBACK_REGEX.test(requestSettings.data)) {
            requestSettings.data = (requestSettings.data ? requestSettings.data + "&" : "") + (requestSettings.jsonp || "callback") + "=?";
        }
    }

    // Process a JSONP request by evaluating the mocked response text

    function processJsonpRequest(requestSettings, mockHandler, origSettings) {
        // Synthesize the mock request for adding a script tag
        var callbackContext = origSettings && origSettings.context || requestSettings,
            newMock = null;

        // If the response handler on the moock is a function, call it
        if (mockHandler.response && $.isFunction(mockHandler.response)) {
            mockHandler.response(origSettings);
        }
        else {

            // Evaluate the responseText javascript in a global context
            if (typeof mockHandler.responseText === 'object') {
                $.globalEval('(' + JSON.stringify(mockHandler.responseText) + ')');
            }
            else {
                $.globalEval('(' + mockHandler.responseText + ')');
            }
        }

        // Successful response
        jsonpSuccess(requestSettings, mockHandler);
        jsonpComplete(requestSettings, mockHandler);

        // If we are running under jQuery 1.5+, return a deferred object
        if ($.Deferred) {
            newMock = new $.Deferred();
            if (typeof mockHandler.responseText == "object") {
                newMock.resolveWith(callbackContext, [mockHandler.responseText]);
            }
            else {
                newMock.resolveWith(callbackContext, [$.parseJSON(mockHandler.responseText)]);
            }
        }
        return newMock;
    }

    // Create the required JSONP callback function for the request

    function createJsonpCallback(requestSettings, mockHandler) {
        jsonp = requestSettings.jsonpCallback || ("jsonp" + jsc++);

        // Replace the =? sequence both in the query string and the data
        if (requestSettings.data) {
            requestSettings.data = (requestSettings.data + "").replace(CALLBACK_REGEX, "=" + jsonp + "$1");
        }

        requestSettings.url = requestSettings.url.replace(CALLBACK_REGEX, "=" + jsonp + "$1");

        // Handle JSONP-style loading
        window[jsonp] = window[jsonp] || function(tmp) {
            data = tmp;
            jsonpSuccess(requestSettings, mockHandler);
            jsonpComplete(requestSettings, mockHandler);
            // Garbage collect
            window[jsonp] = undefined;

            try {
                delete window[jsonp];
            }
            catch(e) {
            }

            if (head) {
                head.removeChild(script);
            }
        };
    }

    // The JSONP request was successful

    function jsonpSuccess(requestSettings, mockHandler) {
        // If a local callback was specified, fire it and pass it the data
        if (requestSettings.success) {
            requestSettings.success.call(callbackContext, (mockHandler.response ? mockHandler.response.toString() : mockHandler.responseText || ''), status, {});
        }

        // Fire the global callback
        if (requestSettings.global) {
            trigger(requestSettings, "ajaxSuccess", [{}, requestSettings]);
        }
    }

    // The JSONP request was completed

    function jsonpComplete(requestSettings, mockHandler) {
        // Process result
        if (requestSettings.complete) {
            requestSettings.complete.call(callbackContext, {}, status);
        }

        // The request was completed
        if (requestSettings.global) {
            trigger("ajaxComplete", [{}, requestSettings]);
        }

        // Handle the global AJAX counter
        if (requestSettings.global && !--$.active) {
            $.event.trigger("ajaxStop");
        }
    }

    // The core $.ajax replacement.

    function handleAjax(url, origSettings) {
        var mockRequest, requestSettings, mockHandler;

        // If url is an object, simulate pre-1.5 signature
        if (typeof url === "object") {
            origSettings = url;
            url = undefined;
        }
        else {
            // work around to support 1.5 signature
            origSettings.url = url;
        }

        // Extend the original settings for the request
        requestSettings = $.extend(true, {}, $.ajaxSettings, origSettings);

        // Iterate over our mock handlers (in registration order) until we find
        // one that is willing to intercept the request
        for (var k = 0; k < mockHandlers.length; k++) {
            if (!mockHandlers[k]) {
                continue;
            }

            mockHandler = getMockForRequest(mockHandlers[k], requestSettings);
            if (!mockHandler) {
                // No valid mock found for this request
                continue;
            }

            // Handle console logging
            logMock(mockHandler, requestSettings);

            if (requestSettings.dataType === "jsonp") {
                if ((mockRequest = processJsonpMock(requestSettings, mockHandler, origSettings))) {
                    // This mock will handle the JSONP request
                    return mockRequest;
                }
            }

            // Removed to fix #54 - keep the mocking data object intact
            //mockHandler.data = requestSettings.data;

            mockHandler.cache = requestSettings.cache;
            mockHandler.timeout = requestSettings.timeout;
            mockHandler.global = requestSettings.global;

            (function(mockHandler, requestSettings, origSettings, origHandler) {
                mockRequest = _ajax.call($, $.extend(true, {}, origSettings, {
                    // Mock the XHR object
                    xhr : function() {
                        return xhr(mockHandler, requestSettings, origSettings, origHandler);
                    }
                }));
            })(mockHandler, requestSettings, origSettings, mockHandlers[k]);

            return mockRequest;
        }

        // We don't have a mock request, trigger a normal request
        return _ajax.apply($, [origSettings]);
    }

    // Public

    $.extend({
        ajax : handleAjax
    });

    $.mockjaxSettings = {
        //url: null,
        //type: 'GET',
        log : function(msg) {
            if (window['console'] && window.console.log) {
                window.console.log(msg);
            }
        },
        status : 200,
        statusText : "OK",
        responseTime : 500,
        isTimeout : false,
        contentType : 'text/plain',
        response : '',
        responseText : '',
        responseXML : '',
        proxy : '',
        proxyType : 'GET',

        lastModified : null,
        etag : '',
        headers : {
            etag : 'IJF@H#@923uf8023hFO@I#H#',
            'content-type' : 'text/plain'
        }
    };

    $.mockjax = function(settings) {
        var i = mockHandlers.length;
        mockHandlers[i] = settings;
        return i;
    };
    $.mockjaxClear = function(i) {
        if (arguments.length == 1) {
            mockHandlers[i] = null;
        }
        else {
            mockHandlers = [];
        }
    };
    $.mockjax.handler = function(i) {
        if (arguments.length == 1) {
            return mockHandlers[i];
        }
    };
})(jQuery);